Re: Booting Debian 10 installer ISO from USB
On Fri 22 Nov 2019 at 13:31:54 -0600, prueba@finsakxim.com.mx wrote:
> El 2019-11-22 08:04, Brian escribió:
> >
> > My first point is that you are having the installer mount and search
> > every partition to find an ISO. This is time consuming.
> >
> > The second point is that an ISO on another partition might be found
> > and used. What happens if it is a jessie ISO?
> >
> > Why not label the partition on the USB drive and use the boot option
> >
> > shared/enter_device=/dev/disk/by-label/<LABEL>
> >
> > I would also put the ISO in / or /iso.
> >
>
> Thanks Brian and Pascal.
>
> Regarding putting ISO in / , both of you are right: iso-scan's quick scan
> seems to work only in / , plus perhaps other few "common" locations. I just
> tried it.
>
> When using full/thorough search among partitions, once finished installer
> actually lists all found Debian ISOs and which disk/partition they're
> located in, so one can choose.
>
> I tried the "shared/enter_device" boot option for the ISO located in custom
> /boot/iso directory, but it seems this doesn't work alone; instead needing
> to be used in conjunction with boot option "shared/ask_device=manual". With
> this the quick scan failure message stills there, but now when selecting
> "yes" to the thorough scan it only scans the specified device, so now it's
> faster.
Sorry; I forgot about "shared/ask_device=manual".
> To get rid of the thorough scan question Pascal's advise of boot option
> "iso-scan/ask_second_pass=true" is in place.
>
> So overall string of kernel boot options would be like
> "iso-scan/ask_second_pass=true shared/ask_device=manual
> shared/enter_device=/dev/disk/by-label/<label>"
> ouch, a bit long of boot options, but with this installer at least goes a
> bit smoother...
>
> But still the question about boot opton "iso-scan/filename"... why isn't it
> actually working?
> What does it mean that this may be an output instead of an input?
Try this for the kernel boot options:
"iso-scan/filename=$iso_path priority=low"
In other words, replace two of the options with iso-scan/filename=. It
works for me when the ISO, vmlinuz and initrd.gz are all in /boot.
--
Brian.
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